354521673 has 48 divisors (see below), whose sum is σ = 585142272. Its totient is φ = 204876000.

The previous prime is 354521669. The next prime is 354521677. The reversal of 354521673 is 376125453.

It is an interprime number because it is at equal distance from previous prime (354521669) and next prime (354521677).

It is not a de Polignac number, because 354521673 - 2² = 354521669 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (354521677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217086 + ... + 218712.

It is an arithmetic number, because the mean of its divisors is an integer number (12190464).

Almost surely, 2^354521673 is an apocalyptic number.

354521673 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

354521673 is a deficient number, since it is larger than the sum of its proper divisors (230620599).

354521673 is a wasteful number, since it uses less digits than its factorization.

354521673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1743 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 354521673 is about 18828.7459221266. The cubic root of 354521673 is about 707.7517143859.

The spelling of 354521673 in words is "three hundred fifty-four million, five hundred twenty-one thousand, six hundred seventy-three".